Redesign of a very popular quiz site (MateQuiz.com)

Matequiz

We are working on improvements of MateQuiz.com. We want to add some freshness to design of this website. This site exists for a few years. It is very simple website where you can create a quiz about yourself and send it to your friends to check how well they know you. You create 9 quiz questions about yourself. You can use our examples or write your own questions and answers.

https://www.matequiz.com/

The current design is a bit old. We want to make it more fresh, professional and a bit more colorful. Most of our users are children between 10 - 14 years. 95% of our traffic is from mobile phones.
We want to keep it simple and clear. We like the good visibility of the call to action button.
Maybe a bit redesigned logo.

https://play.google.com/store/apps/details?id=com.etermax.preguntados.lite&hl=pl&gl=US

https://play.google.com/store/apps/details?id=com.scimob.ninetyfour.percent

https://play.google.com/store/apps/details?id=org.cambridgeenglish.bravi.quiz

https://play.google.com/store/apps/details?id=org.cambridgeenglish.bravi.quiz

The positions of the main elements rather should remain the same position. But if you have a good idea we would like to see it.
You should focus on color changes, shades, corner roundness, borders, maybe background image, etc.

You can use any colors but:
- CTA button should be orange.
- no black background.

Most of our users are children between 10 - 14 years.
95% of our traffic is from mobile phones.
We are using photos from Shutterstock.